Airport Runway Conditions - Box

Airport Runway Conditions - Box

Classification of Airports in the United States

As of January 2001, there were 19,306 airports1 in the United States, with 5,314 of these open to the public and known as public-use
airports. The Federal Aviation Administration includes 3,364 of the existing public-use airports in its National Plan of Integrated Airport
Systems (NPIAS). The NPIAS includes both commercial and general aviation airports that are eligible to receive grants under the Air Improvement
Program. Commercial service airports are defined as public airports receiving scheduled passenger service with at least 2,500 enplaned
passengers per year. These airports handle the vast majority of enplanements in the United States. In 2001, there were 546 commercial
service airports. FAA estimates that 67 percent of the U.S. population lives within 20 miles of at least 1 of these airports.